The power of mathematics comes from its ability to abstract and generalize, turning specific problems into universal truths.

Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.

A film is - or should be - more like music than like fiction. It should be a progression of moods and feelings.

数学是理性的音乐。

Profit should never come at the cost of the planet’s future.

对知识的投资总是能带来最大的利益。学习是好学的人，财富是细心的人。如果一个人把钱包倒进他的头里，没有人能把它从他身边夺走。